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• 如何在SiOS中触及大面积?
原标题:How to get touch size in iOS?

我的理解是,

然而,有些方面似乎已经使用这一职能:

  • Penultimate for actual palm rejection without a predefined rejection area like in Note Taker HD
  • Virtuoso for pressure sensitivity, which they call "TrueVelocity 2"
  • GarageBand also for pressure sensitivity

显然,尽管 Apple果限制,但这种办法在应用仓库时已经得到广泛使用。

http://www.ohchr.org。 私营职能是什么要求SiOS实现接触规模?

最佳回答

玉米和压力是两种不同的动物。 在某些区域,大范围接触物的概率最大(棕榈块面积大,产生吨接触)。

Touch "size" does not exist. IOS touch events are generated when a finger contacts the screen. The OS then takes a center point from the touch and that s what you get. It s not a CGRect, it s a CGPoint.

压力比较容易。 https://stackoverflow.com/questions/5179426/tap-pressure-strength-detection-using-acceler rate” 使用加速度计()探测塔压强度

而且,尽管我看到你在私人APICS市场上转售了几家班场:http://github.com/kennytm/iphone- private-frameructhttps://githOSn/comuntimea

问题回答

有了SOS8,你可以查阅<代码>touch.majorRadius,即,在10.45多处增长,与Milliimeters触角地区的半径成比例。 联系人:major Radius Tolerance是第二大财产,可与SOS8使用,并准确反映触角线线信息。 在我的测量中,它始终是<代码>major Radius级规模的一半。

在“iPad Pro”上,感触器比旧的“iPad”模式报告门槛值低的“Amppencil”的信号更敏感三倍。 据报,Pencil的 touch线半衰期为0.25,而即使是最小的inger子接触也会报告20.84或更多。

在您的《意见》方法中采用这一方法:

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

// Regular multitouch handling.
    [super touchesBegan:touches withEvent:event];

    CGPoint center = [touch locationInView:self];
    NSLog(@"Touch detected at %6.1f | %6.1f", center.x, center.y);
    CGFloat radius = [touch majorRadius];
    NSLog(@"Radius = %5.1f; lower limit = %5.1f; upper limit = %5.1f", radius, radius-touch.majorRadiusTolerance, radius+touch.majorRadiusTolerance);
}

如果你对私人企业感兴趣(即不向贮存方法提交,你会重新寻找:

@interface UITouch (Private)
-(float)_pathMajorRadius;
@end

在我(私人!) 使用这种编号10是一个良好的门槛,可以确定某人何时使用其inger/lus,或将其手放在装置上。

希望对人们有益。 同样,don t在应用程序库中使用。





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